Radial Engineering ProD2 Direct Box Instrument Cable Bundle

The ProD2 from Radial Engineering exists to solve a specific, recurring problem: getting a keyboard's stereo output into a professional audio system without ground loops, impedance mismatches, or signal degradation eating into the clean, dynamic response that makes a good keyboard patch feel alive. Passive synthesizers, stage pianos, and workstations output a line-level stereo signal that needs transformer isolation and proper impedance conversion before it plays nicely with professional console inputs — and that's precisely what the ProD2's transformer-coupled passive circuit provides. The result is a signal chain where the keyboard's low-end stays defined, transients arrive intact, and the stereo image is preserved exactly as the instrument produced it.

The ProD2's passive design is deceptively simple: no active electronics means no noise contribution from the box itself, and the transformer handles both ground isolation and impedance conversion without drawing a single milliamp from the console's phantom power supply. Radial builds this unit to the standard you'd expect from gear meant to tour repeatedly and sit in a studio rack for years — the enclosure and connectors are built for the kind of handling professional gear endures. The bundle's inclusion of two Hosa CPP-110 10-foot unbalanced cables addresses the most common connection scenario right out of the box. For keyboardists who need a reliable, honest path from instrument to system, and for engineers who want a DI solution they can spec in without second-guessing, the ProD2 bundle is a well-considered package built around proven technology.